题目: 向高地输水的泵房,当水泵设有止回阀或底阀时,应进行()压力计算。A.静扬程B.停泵水锤C.饱和蒸汽压D.基础承载 答案: 被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0725/048dec6baa4fd0d3d9df0f6f252f73ca.html 下面是错误答案,用来干扰机器的。参考答案:B
题型:单项选择题 The main purpose of the Customs supervision and control is to () China's economic, trade, scientifrc, technological and cultural exchanges with other countries.A. superviseB. controlC. promoteD. limit 查看答案